High performance microbiological filter

Filtration processes are a large cost component of pharmaceutical manufacture. The particle retention efficiency, particle capacity of the filter and the liquid flux all impact on product cost. A non woven electropositive filler media has been developed whose active component is an alumina (AlOOH) fiber two nanometers in diameter and having a surface area of 350-500 m7g. The nano fibers are dispersed throughout a cellulose/polymeric/ microglass fiber matrix resulting in a 2 micron pore size filter media. It has minimal pressure drop permitting sustainable water flow velocity greater than 1 cm/sec (3.6 L/ cm'/hr) at pressures of only 0.7 bar. A single layer of media retains greater than 99% of 0.03 µm latex spheres or 0.025 ^m size MS2 virus, justifying an Absolute rating of 0.03 microns. The media can be pleated to produce a high surface area cartridge suitable for higher flows or formed into a multilayer depth filter capable of filtering virus size particles to greater than 6 LRV (log retention value). Data are presented on the filtration characteristics of single layer pleated cartridges. Their filtration efficiency for AC fine road dust (average particle size = 1 µm) exceeds that of literature values for microglass, meltblown and membrane filters, with pore size ratings between 1 and 0.2 urn. It's dirt holding capacity is twenty times greater than 1 µm microglass media and almost 200 times that of 1 µm microporous membranes. It's clean water flux is typical of a 2 µm pore size and substantially greater than that of any of the above mentioned media.

Related articles

When it comes to selecting a commercial air filter, or air filtration system, there are many variables that have to be considered. In general, the choice of which air filter can be made a bit easier by first defining the overall goal that you are trying to achieve which is usually one of two options. Is the purpose of the filter to protect the air circulation equipment, or is it to provide a better environment for the occupants of the building?
Different air filters in different systems serve — you guessed...

A lot of people don’t really change their air filters as often as they should – in fact, these people probably aren’t aware of just how often these need to be changed. Quite often, air filters are changed when visible dust and particles gather up on the furnace vents – which should not be the case at all, ideally. Read on to learn more about air filters, and how changing them frequently can help improve your family’s health.
What ARE air filters?
As its name suggests, these are...

Air is lifeblood. Daily we inhale approximately 15.000 liter. Still, the air contains invisible pollutants, which vary in its composition and concentration depending on the location. Especially the respirable particles with a diameter of less than 2.5 µm (PM 2.5) were considered to be particularly dangerous.
According to a current study conducted by the Max Planck Society, worldwide 3.3 million people annually die prematurely due-to consequences of air pollution. In the European Union, the exposure with...

CYCLONE COLLECTORSMany of us have seen the large funnel shaped mass of metal sitting outside of a manufacturing facility, school or processing plant. These are cyclone dust collectors and they come in many shapes and sizes. If you are curious how they work or are wondering which one will be the right one for your process, read on.
HOW THEY WORKCyclone dust collectors filter dust by utilizing centrifugal, buoyant and drag force. When dust laden air enters the cyclone at a controlled speed, the heaver dust particles...

Pharmaceutical research continues to develop more active ingredients and potent compounds. Thus the demands on containment in production installations are increasing and operator protection becomes even more important.The basic design of the AVA conical mixer and dryer allows for easy and effective containment. They are, by their very nature, self-contained systems. Agitator shaft bearings and seals are located outside of the product area and not susceptible to product contamination. Clients can select from a...

Customer comments

No comments were found for High performance microbiological filter. Be the first to comment!